Method of and device for finishing textile articles



March a F. SCHUSTER METHOD OF AND DEVICE FOR FINISHING TEXTILE ARTICLES Filed. June '1. 1922 Patented Mar. 25, 1924.

FRITZ soHUs'rEn, or

llfETHOD OF AND DEVICE FOR Application filed June 1,

To all whom it may concern:

Be it known that I, FRITZ SoHUs'rnR, a citizen of Germany, residing at Chemnitz, Germany, have invented certain new and useful Improvements in Methods of and Devices for Finishing Textile Articles (for which I have filed applications in Germany,

February 19, 1921, September 26, 1921, February 10, 1922, February 10, 1922), of which the following is a specification.

My invention relates to a method of manufacturing electrically heated metal sheets for molds and plates for finishing textile goods of all kinds and to the sheets or molds obtained thereby.

In accordance with my invention the molds or plates on which the articles are shaped are made up of sheet metal parts rovided with serpentine grooves. An insuating mass or substance such as enamel is inserted in the grooves and then baked.

Thin bare wires are then laid loosely, that is without being tensioned, into the enamel grooves. While the wires are thus being in serted in the grooves they are covered with an insulating substance such as porcelaincement. The grooves are then entirely filled with the mass used for coating the wires,\ and finally a second piece of sheet metal is placed on the grooved sheet so as to act as a cover.

The metal sheets are assembled not only to form molds of a well known kind, but also plates between which the textile goods are compressed under heavy hydraulic pressure.

The mold or plate made up in this way has the following advantages: It is thinner than known molds of this kind, because no insulating substance is placed between the two sheet metal parts which would increase the thickness of the mold. Hence, the mold or plate is very quickly heated by the electric current. The surfaces of the mold or plate are perfectly smooth so that no bulges are produced in the textile articles finished on them. As the heating wires are inserted in the grooves of the plates without being pulled taut, very thin wires may be used. Consequently the heating wires can be laid in all protruding points of the mold or plate, so that all of its parts can be uniformly heated.

In consequence of the rapid heating of the GHEMNITZ, GERMANY.

FINISHING TEXTILE ARTICLES.

1922. Serial No. 565,120.

mold, the work of finishing the articles dealt wit-h is greatly expedited.

Further features of the invention will appear hereinafter in the drawings affixed to this specification and forming part thereof.

In the drawings Fig. 1 is an elevation of the grooved sheet metal part of a mold adapted to be used for finishing stockings and Fig. 2 is a cross section of Fig. 1 with the cover in place.

Referring to Figs. 1 and 2, the mold consists of two parts 1 and 2, the former being a plate of sheet metal in the form of a stocking and provided with serpentine grooves adapted to receive a heating wire or wires 3, and the latter consisting of a cover laid upon the grooved base. The thicknesses of the base 1 and of the cover 2 are such that the heating wires 3 lie midway between the external heating surfaces of the mold so that the mold is caused to produce auniform heating effect. The grooves 4 extend lengthwise in the base 1 and across the same. The grooves 4 are first lined with an insulating substance which is then baked. Then a thin bare wire 3 (or wires) is loosely laid into the groove. \Vhile the wire is thus being inserted it is covered with an insulating substance. Finally the grooves 4 are completely filled with this insulating substance and the cover 2 is then screwed on. When the insulating substance is dry the mold is ready for use. It is heated by conducting current into the heating wire through the terminals 5, 6. As thin wires can be used, their length can be made such as to adapt them for pressures of 120 to 250 volts, and the thickness of the mold need not exceed about 6 millimetres. The material of which the mold is made is prefer ably brass, aluminium or an alloy. Fig. 2 shows the cover 2 to be in direct contact with the base 1, that is to say, no insulating material is inserted between the cover and the base, which would increase the thickness of the mold.

The method described above can be applied to molds of all kinds, as for example to the heating plates, mentioned in the beginning and between which the articles are placed prior to their being pressed together by hydraulic pressure.

I Wish it to be understood that I do not desire to be limited to the exact details of construction shown and described, for obvious modifications will occur to a person skilled in the art.

I claim:

1. The method of making heating units for glove and stocking formers and molds, comprising grooving a sheet metal plate, coating the groove with an insulating substance, heating said plate to bake said coating, loosely placing a thin resistance Wire in said coated groove and covering said Wire with insulating substance.

2. A former and mold comprising a grooved sheet metal plate, a primary insulating lining disposed in the base of the groove, a thin resistance Wire extending Without tension along the surface of said lining, an insulating core covering said Wire and filling the groove and another sheet metal plate on top of said first plate covering said groove.

3. The method of making heating units for glove and stocking formers and molds which consists in grooving a sheet metal plate, introducing into the groove an insulating substance, heating the plate to bake said substance in the groove, then laying upon the insulating substance mentioned a resistance Wire, and finally coating said Wire with a second insulating substance and sinuiltaneously filling the groove with said substance.

In testimony whereof I aflix n1 v signature.

FRITZ soHUsTER. 

